Crash when adjusting pitch of a particular note
100% repeatable with the attached score.
1) Open the score
2) Navigate to measure 50
3) Click on the first note on the second staff (it's a B) to select it
4) Hit down-arrow once to lower the B to Bb.
An alternate repro is to click on the 2 digit on the tablature and try to adjust it there.
Note that only that note appears to cause the problem. Other notes in the measure are adjustable and other notes that have a chord symbol attached are adjustable.
Removing the chord symbol/Harmony element does not prevent the crash.
Changing the note by typing a letter does not, however, cause the crash and once the note has been changed the crash does not appear to recur, even if set back to a B. The second attachment ("nocrashon50") is the result of using this method to modify the score, set the note back to B, and then save. From a quick look at the diff, it looks like the only difference in these two scores is that some (or all) of the doubled notes (i.e., same note played on two strings) are reversed in position in the XML. None of these occur in measure 50.
Repros with 2.0.2 and MuseScoreNightly-2015-12-02-1810-77e980d on Windows 10.
This score is not infected with the linkedTo issue I previously reported (and it does not have a Part for the linked staves).